Renowned wilderness photographer John Fielder will give a talk on Monday on the Wilderness Act, which turns 50 years old this month.

The presentation, which is free and open to the public, will run for 75 minutes and feature some of Fielder’s iconic images of Colorado’s wilderness areas. In the University Center for the Arts, there is also a traveling exhibit with 20 of Fielder’s photographs.

The talk is 7 p.m. Monday at Griffin Concert Hall, University Center for the Arts, 1400 Remington St. Doors open at 6 p.m.